Engine



E. DEMBOWSKY.

ENGINE.

APPLICATION FILED JAN. 20, 1919.

III

8 I J I 1 Incl-en or v M W attorney.

THE COLUMBIA PLANOGRAPII C0. WASHINGTON. n. c.

EMIL DEMBOWSKY, OF METUCHEN, NEW JERSEY.

ENGINE.

Specification of Letters Patent.

Patented Aug. 12, 1919.

Application filed January 20, 1919. Serial No. 272,074.

T 0 all whom it may concern:

Be it known that I, EMIL DEMBOWSKY, a citizen of the United States, residing at Metuchen, in the county of Middlesex and State of New Jersey, have invented certain new and useful Improvements in Engines, of which the following is a full, clear, and exact specification.

This invention relates to engines which may also be used as pumps, and is an improvement over the device of a similar nature which is disclosed in Patent No. 1,041,606, issued to me on October 15, 1912.

It is the aim of the present invention to simplify the construction of the patented device by eliminating one of the crank shafts, the connecting gears therefor, and the slides between the pistons. To this end a rigid connecting bar extends between the two pistons and its movements are controlled so that said pistons will move synchronously, as in the patent, by the provision of rocking guides which are arranged in line with the inlet and outlet ports but do not obstruct them. Other objects will appear as the description proceeds.

The invention will be first hereinafter described in connection with the accompanying drawings, which constitute part of this specification, and then more specifically defined in the claims at the end of the description. I

In the accompanying drawings, wherein similar reference characters are used to designate corresponding parts throughout the several views Figure 1 is a side elevation of an engine constructed substantially in accordancewith this invention.

Fig. 2 is a section on the line IIII of Fig. 1 on a larger scale and showing one positlon of the pistons in solid lines and another position in dotted lines.

Fig. 3 is a section on the line IIIIII of Fig. 2, and

Fig. 4 is a diagrammatic view showing the pipe connections to the inlet and outlet ports and the reversing valve.

The engine casing 1 is preferably supported by brackets 2 from the side of a stand 3 which has a journal 1 at its upper end for the drive shaft 5, as shown in Fig. 1. A

pulley 6 is mounted on one end of said shaft 5 while its other end is connected to the crank 7 which rotatably engages one piston 15 in one cylinder 9 of the casing. Another" cylinder 10 similar to the cylinder 9 is provided in the casing, and both cylinders open at 11 and 12 into each other and to the inlet port 13 and outlet port 11 which communicate with the casing through opposite walls of the casing between the openings 11 and 12 of the cylinders.

In the cylinder 10, which is equal in size to the cylinder 9, as in the patent above referred to, a rotary piston 15 is arranged, and said piston is connected by a rigid, preferably integral, connecting bar 16 to the piston 8 in the cylinder 9. It will be noted that there is no crank connected directly to the piston 15, as in the patent, but guiding means is provided for insuring the synchronous movement of the two pistons so as to produce the same results as the patented dev1ce.

Said guiding means comprises side pieces 17 and 18 set in the sides of the casing across the inlet and outlet ports respectively and having ports or openings 19 and 20 registering with said inlet and outlet ports, as shown in Fig. 3, and rocking guides 21 and 22 working between said side pieces 17 and 18, respectively, and the opposite sides of the connecting bar 16. Each of the side pieces 17 and 18 has lateral beads 23 and 21 which overlap the edges of the openings 11 and 12 of the two cylinders, as shown in Fig. 2, and are adapted to engage and fit inwardly cut grooves 25 and 26 in the pistons at either side of the connecting ,bar 16 when said pistons straddle the openings 11 and 12. This construction allows for the difference in the distances between the centers of'the groove 29 in the adjacent side piece 17 orv 18, while the other .end 30 of said rocking two pistons at different points in their synguide loosely fits in agroove; in the middle portion of the connectingplece, as at 31,

Fig.2. The end of the rocking guide which carries the ribs 28 may be broader than the end 30, and is curved, as at 32, to conform to the are of increment of safe guide as it rocks back and forth in guiding the connecting bar and pistons from the position shown in solid lines in Fig. 2, in the direction of the arrows, to the dotted line position, then to the position exactly the reverse of the solid line position, and finally to the position directly the reverse of the dotted line position, and so on throughout one revolution after another as long as the propelling force acts in the direction indicated.

lVhen the device is used as an engine, steam, or other motive fluid, is supplied through the inlet port 13 and operates upon the connecting bar and pistons as just described, the power being taken off at the pulley 6. When the device is used as a pump, power is applied to the pulley and through it to the crank and pistons, whereby fluid introduced through the inlet port 13 is forced around in the cylinders and out through the outlet port 14.

As illustrated in Fig. l, a four-way valve 33 may be placed in the pipes at and 35 leading respectively to the inlet and outlet ports so as to place either one of said ports in communication with a supply pipe 36 and the other one in communication with a discharge pipe 37. The operation of the engine or pump may in this way readily be reversed by means of the valve 33, as indicated in Fig. 4 by solid line arrows leading to the inlet port and dotted arrows leading to the outlet port.

Having thus described my invention, what I claim as new and desire to secure by Letters Patent of the United States is 1. The combination with a pair of similar cylinders arranged side by side and having openings in their adjacent sides communicating with one another, inlet and outlet ports communicating with said cylinder openings at opposite sides, rotary pistons in said cylinders, a rigid connecting bar between said pistons and constituting a partition between the inlet and outlet ports, a crank operatively engaging the piston of one of the cylinders, and means externally of the connecting bar and the other cylinder for causing the piston in the latter to move synchronously with the piston in the first cylinder.

2. The combination with a pair of similar cylinders arranged side by side and having openings in their adjacent sides communicating with one another, inlet and outlet ports communicating with said cylinder openings at opposite sides, rotary pistons in said cylinders, a rigid connecting bar between said pistons and constituting a partition between the inlet and outlet ports, a crank operatively engaging the piston in one cylinder, and rocking guides engaging the opposite faces of the connecting bar for causing the piston in the other cylinder to move synchronously with the piston in the first cylinder. v

3. The combination with a pair of similar cylinders arranged side by side and having openings in their adjacent sides communicating with one another, inlet and outlet ports communicating with said cylinder openings at opposite sides, rotary pistons in said cylinders, a rigid connecting bar between said pistons and constituting a partition between the inlet and outlet ports, a crank operatively engaging the piston in one cylinder,

and rocking guides engaging the opposite faces of the connecting bar for causlng the piston in the other cylinder to move synchronously with the piston in the first cylinder, said rocking guides being arranged in line with the inlet and outlet ports, respectively, and having recesses therein bridging said ports.

4. The combination with a pair of similar cylinders arranged side by side and having openings in their adjacent sides communicating with one another, inlet and outlet ports opening into said cylinder openings at opposite sides, rotary pistons in said cylinders, a rigid connecting bar between said pistons and constituting a partition between the inlet and outlet ports, a crank operatively engaging the piston of one of the cylinders, and rocking guides engaging the opposite faces of the connecting bar for causing the piston in the other cylinder to move synchronously with the piston in the first cylinder, means for retaining the outer ends of said guides against traveling other than by a rocking movement, and means for preventing the inner ends of said guides from moving along the connecting bar.

5. The combination with a pair of similar cylinders arranged side by side and having openings in their adjacent sides communieating with one another, inlet and outlet ports communicating with said cylinder openings at opposite sides, rotary pistons in said cylinders, a rigid connecting bar between said pistons and constituting a partition between the inlet and outlet ports, a crank operatively engaging the piston of one cylinder, rocking guides engaging the opposite faces of the connecting bar for causing the piston in the other cylinder to move synchronously with the piston in the first cylinder, beads along the edges of the openings in the cylinders projecting slightly into said cylinders, and clearance grooves in the pistons adjacent the junctures of the connecting bar therewith to cooperate with said beads for the purpose specified.

In testimony whereof I have signed my name to this specification.

EMIL DEMBOWSKY.

Copies of this patent may be obtained. for five cents each, by addressing the Commissioner of Patents, Washington, D. G. 

